A212162 - cp's OEIS frontend

A212162 Triangle T(n,k), n>=1, 0<=k<=n^2, read by rows: row n gives the coefficients of the chromatic polynomial of the rhombic hexagonal square grid graph RH_(n,n), highest powers first.

n	a(n)
1	1
2	0
3	1
4	-5
5	8
6	-4
7	0
8	1
9	-16
10	112
11	-448
12	1120
13	-1791
14	1786
15	-1012
16	248
17	0
18	1
19	-33
20	510
21	-4898
22	32703
23	-160859
24	602408
25	-1749715
26	3975561
27	-7068408
28	9755858
29	-10265148
30	7968348
31	-4304712
32	1445104
33	-226720
34	0
35	1
36	-56
37	1508
38	-25992
39	321994
40	-3051871
41	23000726
42	-141421592
43	722137763
44	-3101089711

[1, 0, 1, -5, 8, -4, 0, 1, -16, 112, -448, 1120, -1791, 1786, -1012, 248, 0, 1, -33, 510, -4898, 32703, -160859, 602408, -1749715, 3975561, -7068408, 9755858, -10265148, 7968348, -4304712, 1445104, -226720, 0, 1, -56, 1508, -25992, 321994, -3051871, 23000726, -141421592, 722137763, -3101089711]

cp's OEIS Frontend

A212162 Triangle T(n,k), n>=1, 0<=k<=n^2, read by rows: row n gives the coefficients of the chromatic polynomial of the rhombic hexagonal square grid graph RH_(n,n), highest powers first.

Table of values

List of values